Hopefully this won't happen, but if it does, you have a couple of options. First, you could withdraw the funds from your 529 account and use them for any purpose you choose. Since your child is disabled, you would not owe the 10 percent federal penalty tax that normally applies to nonqualified withdrawals (although you would owe federal, and maybe state, income tax on the earnings portion of the withdrawal). Or, you could leave the funds in the 529 account and change the designated beneficiary to another qualified family member who will be attending college.